Android发送短信

public class MainActivity extends Activity {

private EditText phoneNumber;
private EditText content ;
private Button send;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        phoneNumber = (EditText)this.findViewById(R.id.phoneNumber);
        content = (EditText)this.findViewById(R.id.content);
        send = (Button)this.findViewById(R.id.send);

        send.setOnClickListener(new ButtonListener());
    }

    public class ButtonListener implements View.OnClickListener{

    @Override
    public void onClick(View v) {
      String number = phoneNumber.getText().toString();
      String contents = content.getText().toString();
      SmsManager manager = SmsManager.getDefault();
      ArrayList texts = manager.divideMessage(contents);
      for(String text : texts){
       manager.sendTextMessage(number, null, text, null, null);
      }

      Toast.makeText(MainActivity.this, getResources().getString(R.string.success), Toast.LENGTH_LONG).show();

    }

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   android:orientation="vertical"
   >

            android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/number" />
     android:id="@+id/phoneNumber"
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     />

        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/content" />

     android:id="@+id/content"
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:minLines="3"
     />
      android:id="@+id/send"
      android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="@string/content"
      />

<?xml version="1.0" encoding="utf-8"?>
    package="com.example.sms"
    android:versionCode="1"
    android:versionName="1.0" >

android:minSdkVersion="4"
android:targetSdkVersion="15" />

            android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
                    android:name="com.example.sms.MainActivity"
            android:label="@string/app_name" >

     android:name="android.permission.SEND_SMS"
     />

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